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    TWO-LAYER-THREE-WAY CATALYST
    1.
    发明申请
    TWO-LAYER-THREE-WAY CATALYST 有权
    两层三层催化剂

    公开(公告)号：US20100135879A1

    公开(公告)日：2010-06-03

    申请号：US12530580

    申请日：2008-02-16

    申请人： Martin Roesch ,  Dieter Lindner ,  Raoul Klingmann ,  Patrizia Laura ,  Joerg-Michael Richter ,  Marcus Schmidt

    发明人： Martin Roesch ,  Dieter Lindner ,  Raoul Klingmann ,  Patrizia Laura ,  Joerg-Michael Richter ,  Marcus Schmidt

    IPC分类号： B01J23/10 ,  B01J21/06 ,  B01D53/94 ,  B01J23/44 ,  B01J21/04

    CPC分类号： B01J37/0244 ,  B01D53/945 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/407 ,  B01D2255/9022 ,  B01J23/44 ,  B01J23/464 ,  B01J23/63 ,  Y02A50/2324 ,  Y02T10/22

    摘要： A double-layer three-way catalyst is presented, which is formed from a catalytic coating applied directly to an inert honeycomb and a catalytically active coating thereon, and is suitable especially for cleaning of exhaust gases of motor vehicles with gasoline-operated internal combustion engines. The catalyst contains, in each layer, an active aluminum oxide and a cerium/zirconium mixed oxide, both of which are catalytically activated by palladium. The second layer on the gas side contains not only palladium but also rhodium, which is applied to the active aluminum oxide and the cerium/zirconium mixed oxide of the second layer in addition to the palladium. The cerium/zirconium mixed oxide of the second layer has a higher zirconium oxide content than the cerium/zirconium mixed oxide of the first layer. The catalyst is notable for exceptional activity coupled with outstanding aging stability.

    摘要翻译： 提出了一种双层三元催化剂，其由直接施加到惰性蜂窝体上的催化涂层和其上的催化活性涂层形成，并且特别适用于用汽油操作的内燃机清洁机动车辆的废气 。 催化剂在每层中含有活性氧化铝和铈/锆混合氧化物，它们均由钯催化活化。 除了钯之外，气体侧的第二层不仅包含钯而且还包含铑，其施加到活性氧化铝和第二层的铈/锆混合氧化物。 第二层的铈/锆混合氧化物具有比第一层的铈/锆混合氧化物更高的氧化锆含量。 该催化剂值得注意的是出色的活性和突出的老化稳定性。

    THREE WAY CATALYST
    3.
    发明申请
    THREE WAY CATALYST 有权
    三种催化剂

    公开(公告)号：US20100263357A1

    公开(公告)日：2010-10-21

    申请号：US12305830

    申请日：2007-06-27

    申请人： Dieter Lindner ,  Martin Roesch ,  Raoul Klingmann ,  Anke Wolf ,  Joerg-Michael Richter

    发明人： Dieter Lindner ,  Martin Roesch ,  Raoul Klingmann ,  Anke Wolf ,  Joerg-Michael Richter

    IPC分类号： F01N3/20 ,  B01J23/10

    CPC分类号： B01J37/0244 ,  B01D53/945 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/407 ,  B01D2255/9022 ,  B01J23/63 ,  B01J37/0234 ,  B01J37/0248 ,  Y02A50/2324 ,  Y02T10/22

    摘要： A double-layer three-way catalyst for purification of the exhaust gases from internal combustion engines which has excellent activity and thermal stability is described. The catalyst contains active aluminium oxide and a first cerium/zirconium mixed oxide which are both catalytically activated with palladium in the first layer applied to a catalyst support. In the second layer which is in direct contact with the exhaust gas, the catalyst likewise contains an active aluminium oxide and a second cerium/zirconium mixed oxide which are both catalytically activated with rhodium. The second cerium/zirconium mixed oxide has a higher zirconium oxide content than the first mixed oxide.

    摘要翻译： 描述了一种用于净化内燃机废气的双层三元催化剂，其具有优异的活性和热稳定性。 催化剂含有活性氧化铝和第一铈/锆混合氧化物，其在施加到催化剂载体上的第一层中都用钯催化活化。 在与废气直接接触的第二层中，催化剂同样含有活性氧化铝和第二铈/锆混合氧化物，它们都是用铑催化活化的。 第二铈/锆混合氧化物的氧化锆含量比第一混合氧化物高。